The invention relates to the technical field of titanium dioxide acidic wastewater treatment, and provides a treatment method of sulfuric acid method titanium dioxide acid wastewater. The method comprises the following steps that: S1, under stirring treatment, a mixed solution of acidic wastewater and clear white water containing 3-8% of sulfuric acid automatically flows into a neutralization poolthrough height difference, limestone slurry is pumped into the neutralization pool, and first-stage neutralization is carried out, the pH value ranges from 4.0 to 5.0 at the reaction end point ; S2,stirring is continued, the digested lime slurry is pumped, and second-stage neutralization is carried out until the pH value is 7.0-8.5 at the reaction end point to obtain reaction slurry; S3, the qualified reaction slurry obtained after the neutralization is pumped into a filter press for filter pressing, the pH value of the reaction slurry is 6.5-8.5; and S4, a filter cake obtained after filterpressing is naturally dried, filtrate obtained after filter pressing is aerated and filtered, qualified water which is detected to reach the standard is discharged or is used as process water. The method of the invention has the advantages of high neutralization efficiency, good aeration effect and low cost.